Rotatable Adjustable Dumbbell With Radial Plate Locking
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Solution Overview
Problem
Existing dumbbells suffer from low operation efficiency, potential safety hazards due to loose plates, and unsatisfactory locking mechanisms that lead to poor user experience and instability during use.
Innovation Solution
A rotatable and adjustable dumbbell design incorporating a screwing and insertion connection structure with a traverse guiding restraining mechanism, featuring radial grooves and protrusions, graduated thickness baffle plates, and spring fixing parts to stabilize the assembly and lock button switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If screwing connection structure is used to adjust dumbbell plates, then weight adjustment is possible, but operation efficiency is low and plates are prone to loosen
Solution Approach 1:
The connection structure is divided into multiple functional components: guide plates with guide grooves for alignment, locking buckles with spring mechanisms for securing, and slots for plate positioning. This segmentation allows each component to perform its specific function efficiently, enabling quick weight adjustment while maintaining security.
Solution Approach 2:
The guide plates act as intermediary elements between the dumbbell handle and the weight plates. They provide guide grooves that align the plates and facilitate smooth attachment and detachment, improving operation efficiency while the locking buckles secure the connection.
2Ease of manufacture
If axial insertion connection is used for dumbbell plates, then assembly is simple, but the dumbbells will roll on floor and locking effect is poor
Solution Approach 1:
The connection structure transitions from purely axial insertion to a combination of axial insertion and radial locking. The guide plates provide axial guidance while the locking buckles with transverse spring restraint add radial securing, preventing rolling and improving stability without complicating assembly.
Solution Approach 2:
The locking buckle structure uses asymmetric design with one-way spring restraint that allows easy insertion but secure locking. The guide grooves and slots are positioned asymmetrically to provide both guidance and anti-rolling functionality, maintaining assembly simplicity while enhancing stability.
3Reliability
If locking buckle with vertical restraint and transverse spring restraint is used, then locking function is achieved, but the structure is prone to shake and locking effect is unsatisfactory
Solution Approach 1:
The guide plate structure merges multiple functions into a single component: it provides guide grooves for alignment, slots for positioning, and support for the locking buckle mechanism. This integration reduces the number of separate parts, minimizes shaking, and improves overall locking stability while maintaining reliability.
Solution Approach 2:
The guide plates have locally optimized features: guide grooves in specific positions for alignment, slots of appropriate dimensions for positioning, and reinforced areas for locking buckle attachment. This local quality enhancement ensures stable locking without requiring complex overall structure.
4Stability of the object's composition
If radial grooves and protrusions with graduated thickness baffle plates are used, then assembly stability is improved, but device complexity increases
Solution Approach 1:
The connection structure is segmented into guide plates, locking buckles, slots, and guide grooves, with each part having a specific function. The graduated thickness of baffle plates is just one aspect of this segmentation, providing stability where needed while keeping other areas simple for easy assembly.
Solution Approach 2:
Instead of making the entire structure complex to achieve stability, the design uses simple guide grooves and slots that guide assembly naturally. The graduated thickness of baffle plates provides stability only where required, inverting the approach of making everything uniformly complex.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design ensures stable assembly and secure locking, preventing loosening and shaking, enhancing user experience and safety by maintaining the dumbbell plates in a fixed position without external forces.
Implementation Method 1
at least one elastic component is provided between the lock button switches and the dumbbell plates
Data Source
AI summary
A rotatable and adjustable dumbbell, with radial grooves and radial protrusions arranged on left and right sides of the dumbbell plates respectively, more than two groove-end axial baffle plates evenly arranged on the radial grooves, inner connecting grooves arranged inside the groove-end axial baffle plates, more than two protrusion-end axial baffle plates evenly provided on outer end surfaces of the radial protrusions, and outer connecting grooves provided in the protrusion-end axial baffle plates. The dumbbell plates and the inner end plate are both provided with guide grooves at outer diameters, a lower portion of the lock button switches is provided with at least one connecting gap and at least one connecting protrusion, at least one guide plate and at least one inner guide groove are provided inside the dumbbell plates, the guide plate is inserted into the connecting gap, and the connecting protrusion is inserted into the inner guide groove.